7th Grade Core Review

Distributive Property

100

-3(2x +4)=

-6x -12

200

2(x + 3)

2x +6

300

5(-3y + 1)

-15y + 5

400

-6(2x - 4 - 5x)

18x + 24

500

7( 2x + 4 - x - 3)

7x + 7

Combining Like Terms

100

2x - 4 + 5x - 10

7x -14

200

-3x + 7x

4x

300

2c + 4d - 5c - 7d

-3c -3d

400

24e -7f +8c - 4b + 7f

24e + 8c - 4b

500

-4g + 7y - 4g + 7y - 4g - 7y + 4g - 7y

-8g

1-Step Equations

100

x + 4= 9

x= 5

200

x - 5= 12

x= 17

300

-3x = 12

x= -4

400

x/6 = -9

x= -54

500

x/-7 = 6

x= -42

2-Step Equations

100

2x + 4 = 10

x= 3

200

-3x - 3 = -12

x = 3

300

-6a -12 = 60

a= -12

400

x/6  + 2 = 10

x= 48

500

x/3 + 5 = -10

x= -45

Anything or Everything

100

What kind of a dog do I own?

A pug

200

The tallest living thing in the world (you can see one in the state of Washington).

What is a giant redwood tree?

300

The largest continent (not country).

What is Asia?

400

The world's largest snake.

What is an anaconda?

500

The world's fastest sea animal.

What is a killer whale?